package servlet;

import bean.Result;
import com.google.gson.Gson;

import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;
import java.io.File;
import java.io.IOException;
import java.util.UUID;

@WebServlet(name = "UploadImageServlet", value = "/UploadImageServlet.s")
@MultipartConfig
public class UploadImageServlet extends HttpServlet {
    // 最后记得在Linux中修改路径
    public static final String IMAGE_PATH="D:\\com\\phone\\image";
///root/zpl/work/com/phone/image/

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        Result result;
        try{
            File file = new File("D:\\com\\phone\\image");
            if (!file.exists()){
                file.mkdirs();
            }
            final Part image = request.getPart("image");
            //提取文件后缀名
            final String suffix = image.getSubmittedFileName()
                    .replaceAll(".+(\\.\\w+)","$1");
            //生成随机文件名
            String filename = UUID.randomUUID().toString();
            filename=filename.replaceAll("-","");
            filename+=suffix;
            //保存文件
            image.write(IMAGE_PATH+filename);
            //构建 上传文件的 web路径
            String webpath="/upload/"+filename;
            result =new Result(1,"文件上传成功",webpath);
        }catch (Exception e){
            e.printStackTrace();
            result=new Result(0,"文件上传失败",null);
        }
        final String json = new Gson().toJson(result);
        response.getWriter().append(json);
    }
}
